16results about How to "Reduce exhaust" patented technology

An excitation closer capable of improving closing reliability comprises a shell with a cavity, a first conductor and a second conductor, the first conductor and the second conductor are arranged in the shell in a penetrating mode in an insulated and opposite spaced mode, an excitation source and a piston are arranged in the cavity of the shell, the piston is of a shell-shaped structure with one end open and one end closed, and at least the peripheral face of the piston is made of conductive materials. The open end of the piston faces the driving force release end of the excitation source, and the closed end of the piston is arranged corresponding to the relatively spaced ends of the first conductor and the second conductor; the excitation source can act according to a received trigger signal to release driving force to drive the piston to move towards the first conductor and the second conductor, so that the piston is clamped between the ends, oppositely arranged at intervals, of the first conductor and the second conductor in a plastic deformation mode, and the first conductor and the second conductor are conducted. According to the invention, the reliability of conduction between the first conductor and the second conductor is improved through the plastically deformed piston.

The utility model relates to the technical field of semiconductors and photovoltaics, in particular to an air exhaust structure and processing equipment, and solves the problem that in the prior art, air exhaust amount difference is large when air in multiple environments is exhausted through one pipeline sharing an air exhaust device. The air exhaust structure comprises an air exhaust pipeline, the air exhaust pipeline is provided with a pipe cavity, the air exhaust pipeline is provided with an air exhaust opening, the pipe wall of the air exhaust pipeline is provided with a first air inlet and a second air inlet, and at least one flow uniformizing piece is arranged in the pipe cavity of the air exhaust pipeline to divide the pipe cavity into a second cavity and at least one first cavity. Each first cavity is communicated with at least one first air inlet, each second cavity is communicated with at least one second air inlet, and suction force can act on air at each first air inlet and air at each second air inlet under the condition that the air extraction opening executes air extraction. According to the air exhaust structure and the processing equipment provided by the invention, the difference of the air displacement at each air inlet in the air exhaust structure can be reduced, so that the air exhaust uniformity and stability at each part are improved.

The utility model discloses a kind of two-stage compressor and air conditioning system, the two-stage compressor includes suction end cover, further include the screw compressor for the low-pressure stage part of the two-stage compressor, and the sliding vane compressor for the high-pressure stage part of the two-stage compressor;The screw compressor and the sliding vane compressor are connected in series in the rear end of the suction end cover.Compared with prior art, the utility model uses the two-stage compressor of low-pressure stage for screw compressor, high-pressure stage for sliding vane compressor, compared with traditional two-stage screw compressor can be applied to lower exhaust capacity, and with smaller volume and lower cost, higher operating stability.

The invention discloses coal gangue with a low oil absorption value and a preparation method thereof, and belongs to the technical field of polymer composite material functional assistants, and the coal gangue is prepared from the following raw materials in parts by weight: 70-85 parts of coal gangue, 3-4 parts of palmitic acid, 2-4 parts of stearic acid, 2-5 parts of polyethylene wax, 3-7 parts of polypropylene wax and 5-10 parts of linear low density polyethylene powder. The preparation method comprises the following steps: mixing the raw materials, stirring, heating, and extruding in a single screw extruder after stirring to obtain the coal gangue with low oil absorption value. Through a multi-layer filling modification technology, the coal gangue is gradually filled and modified by the low-viscosity-high-viscosity auxiliary agent, and the modified coal gangue which is low in oil absorption value, low in gas displacement and high in compatibility is obtained. In addition, the raw materials are easy to obtain, and the preparation method is simple and convenient to popularize and apply.

This invention discloses a low-temperature dry dust removal device for phosphorus furnace gas, comprising: two sets of series-connected metal felt filter screens, filter screen electric heaters, a backflushing system, a dust collection funnel, a spiral dust collector, and a fan. The outlet pipe of the yellow phosphorus furnace gas is connected to the inlet of the series-connected metal felt filter screens. Each metal felt filter screen is equipped with an electric heater. The backflushing system achieves dust removal by adjusting the valve switch to reverse the gas flow. The filter cake outlet of the metal felt filter screen is connected to the inlet of the dust collection funnel. The outlet of the metal felt filter screen is connected to the inlet of the fan. The dust outlet at the bottom front side of the metal felt filter screen and the dust collection funnel are sealed and connected to the dust inlet of the closed spiral dust collector. The outlet of the fan is the exhaust port of the device. This device can solve the problem of yellow phosphorus furnace gas condensation clogging and corrosion of equipment, achieve low-temperature and high-efficiency dust removal of yellow phosphorus furnace gas, and improve filtration efficiency and phosphorus yield.

The invention relates to the technical field of metal refining, and provides an oxygen-enriched side blowing lead smelting furnace which comprises a lead smelting furnace mechanism, a smoke exhaust control mechanism is installed in the middle of the upper end of the lead smelting furnace mechanism, a driving mechanism is installed on the left side of the upper end of the lead smelting furnace mechanism, and an upper side blowing mechanism is installed on the upper middle portion of the lead smelting furnace mechanism. And a lower side blowing mechanism is mounted at the middle lower part of the lead smelting furnace mechanism. When the temperature in the furnace is too low, the rotating ball continues to slide leftwards to pull the air blowing pipe to rotate horizontally, then the air blowing pipe obliquely blows oxygen to the depression angle of the liquid level, the oxygen can be obliquely and directly blown to the liquid level, meanwhile, downward vortexes are formed at the upper end of the liquid level, the oxygen can fully react with molten materials, and the combustion reaction efficiency is further improved; and when the temperature in the upper furnace body is too high, the gas blowing pipe obliquely blows oxygen to the elevation angle of the liquid level, upward vortexes are formed above the liquid level, the oxygen emission rate is further increased, the oxidative combustion reaction is reduced, and a better cooling effect is achieved.

This invention relates to a CAR T cell that secretes CTLA-4 nanobody targeting FAP, its preparation method, and its application. The CAR T cell is a T cell modified with chimeric antigen receptor FAP VHH-HIStag-CD8-CD137-CD3ζ-CTLA-4VHH-GFP, the nucleotide sequence of which is shown in SEQ ID NO.1. The preparation method of the CAR T cell includes: constructing a recombinant lentiviral vector, packaging lentivirus, infecting T cells with lentivirus, inducing in vitro, expanding and culturing, and obtaining engineered CAR T cells that secrete CTLA-4 nanobody targeting FAP. FAP-CTLA-4 / Nb CAR T cells have a good killing effect on FAP-positive tumor cells. The killing effect of FAP-CTLA-4 / Nb CAR T cells on tumor cells is related to the expression level of FAP in tumor-associated cells, providing a new strategy for adoptive immunotherapy of tumors.

The application relates to the fields of biotechnology and targeted therapy, and particularly relates to a recombinant construct, a CAR-T cell and construction and application thereof. The application verifies the role and mechanism of THEMIS in maintaining the long-term killing of tumor cells of CAR-T through experiments. The CAR-T cell overexpressing THEMIS is constructed, compared with a control group, the proliferation capacity and memory cell formation capacity of the THEMIS-7x19 CAR-T cell are enhanced after antigen stimulation, and the cytokines are in a controllable state, the cell apoptosis and exhaustion are reduced, and the long-term tumor killing capacity can be maintained more effectively. The in-vivo experiment also proves that the THEMIS-7x19 CAR-T cell has stronger anti-tumor effect compared with the control group in a lymphoma tumor-bearing mouse model, and the survival time of the mouse is significantly prolonged.

The invention discloses a pretreatment method of a lithium iron phosphate positive electrode material for ICP (Inductively Coupled Plasma) test, which comprises the following steps: digesting the lithium iron phosphate positive electrode material and fixing the volume, dispersing the lithium iron phosphate positive electrode material in a dispersion medium before digesting, heating to 430-460 DEG C, carrying out oxidation reaction, and keeping for 1.5-3 hours. Comprising the following steps: S1, ultrasonic dispersion: weighing a lithium iron phosphate positive electrode material, and carrying out ultrasonic dispersion in a dispersion medium for 3-6 minutes to obtain a dispersion; s2, heating to remove carbon: heating the dispersion to generate oxidation reaction to obtain an oxidized sample; s3, acid digestion: mashing the oxidized sample into powder, and adding a digestion reagent until the solid is completely dissolved to obtain a digestion solution; and S4, constant volume: carrying out constant volume on the digestion solution by using pure water. The lithium iron phosphate is heated for 1.5-3 hours in an aerobic environment at the temperature of 430-460 DEG C, so that a carbon coating on the surface of the lithium iron phosphate can be effectively removed, and the content detection result of a main element Li is more accurate; concentrated hydrochloric acid is used for replacing mixed acid for digestion, so that waste gas is greatly reduced, and risks in safety and environmental protection are reduced.

The application discloses a clothes processing device, comprising: a drying air duct arranged above a drum assembly, the drying air duct comprising an air diffusing duct and two air chambers, the air diffusing duct being in communication with an air outlet and the two air chambers, and the two air chambers being in communication with an air inlet; a water box arranged on the top of the drum assembly and in communication with a clothes accommodating chamber, the water box being located on one side of the air diffusing duct, and the top of the water box being provided with an exhaust air duct in communication with the inside of the water box, one end of the exhaust air duct being in communication with the air diffusing duct; wherein the air in the water box can enter the air diffusing duct through the exhaust air duct, and the airflow direction of the exhaust air duct entering the air diffusing duct is consistent with the airflow direction in the air diffusing duct. Therefore, the air in the water box can be introduced into the drying channel through the exhaust air duct, and then introduced into the drum assembly through the drying channel, so that the exhaust of the water box is realized, the setting of the exhaust pipe is reduced, the structure is simplified, and the cost is reduced.

The present invention relates to an o / w emulsion comprising an oil phase, an aqueous phase and particles dispersed in the aqueous phase, wherein the particles are lipid nanoparticles (LNP) comprising a nucleic acid component, the particles being capable of stabilizing the oil-water interface. The invention also discloses a pharmaceutical composition, such as a vaccine, comprising the o / w emulsion.

The invention discloses an application of Pomalidomide in preparation of a medicine for long-term immune reconstitution of an HIV (human immunodeficiency virus) patient. According to the application disclosed by the invention, the research finds that pomalidomide can be used for remarkably inhibiting the replication of HIV-1 in MT-4 and Jurkat cell lines, primary CD4 + T cells and humanized mouse models for the first time, and the Pomalidomide can be used for increasing the quantity of CD4 + T and the ratio of CD4 to CD8, increasing the activation of T cells, reducing the depletion of the T cells and promoting immune reconstruction no matter in a cell model or a mouse model. The invention provides a theoretical basis for research and development of medicines for long-term immune reconstitution of HIV patients, opens up a new application of Pomalidomide, provides a brand new method for treating HIV infection and promoting long-term immune reconstitution of HIV patients, and has a wide application prospect in the technical field of treatment of HIV infection.

This invention belongs to the field of tower foot welding technology, specifically referring to a welding device for the feet of power angle steel towers. It includes a support frame, a transverse slide, a positioning platform, a measuring drive mechanism, a dust-collecting welding mechanism, a compressed air anti-scattering mechanism, and a controller. The transverse slide is mounted on the upper wall of the support frame, and the positioning platform is symmetrically positioned on the upper walls at both ends of the support frame. The measuring drive mechanism is mounted on the transverse slide and includes a drive component, a sliding component, and a measuring component. The drive component is located on the upper walls at both ends of the transverse slide, the sliding component is located on the upper wall of the transverse slide, and the measuring component is located on the side wall of the drive component. This invention provides a welding device for the feet of power angle steel towers capable of collecting welding fumes generated during the welding process and compressing the dust particles in the welding fumes into a cake to prevent secondary diffusion of the fumes.

The invention relates to the field of cell cryopreservation, in particular to a cryopreservation resuscitation fluid for immune cells, the cryopreservation resuscitation fluid comprises NAD < + > or precursor molecules thereof, ethylenediamine tetraacetic acid (EDTA) and human serum albumin (HSA), the invention also provides a method for using the cryopreservation resuscitation fluid, the cell viability can be obviously improved, the cell state can be improved, the cell depletion can be reduced, and the immune cells can be recovered. The good proliferation capacity of the cells is maintained.

An arc-extinguishing system and circuit breaker are disclosed. The arc-extinguishing system includes two parallel arc-extinguishing chambers. In a first direction, the arc inlets of the two arc-extinguishing chambers are spaced apart and opposite each other. The end of each arc-extinguishing chamber furthest from the arc inlet is an exhaust end. Multiple arc-extinguishing grids arranged in a second direction are disposed within the arc-extinguishing chamber located between the arc inlet and the exhaust end. A magnet assembly is also disposed outside each arc-extinguishing chamber. The magnet assembly includes a permanent magnet and pairs of magnetic conductive plates. In the second direction, the permanent magnet and the arc-extinguishing chamber are stacked. In a third direction, the arc-extinguishing chamber and the permanent magnet are located between each pair of magnetic conductive plates. The two magnetic poles of the permanent magnet are respectively attached to each pair of magnetic conductive plates to generate an arc-initiating magnetic field, which covers both the arc inlet and the exhaust end of the arc-extinguishing chamber. In this invention, a magnet assembly is disposed outside each arc-extinguishing chamber. The magnetic conductive plates and the permanent magnet work together to generate an arc-initiating magnetic field that completely covers the arc-extinguishing chamber, facilitating the movement of the arc into the arc-extinguishing chamber and thus improving the arc-initiating and arc-extinguishing efficiency.